Main winch system of rotary drilling rig

A technology of rotary drilling rig and main winch, which is applied in the direction of rotary drilling rig, hoisting device, rotary drilling, etc., which can solve the problems of drill pipe loss and increase of system thermal load, so as to reduce thermal load and load rate , the effect of saving fuel consumption

Inactive Publication Date: 2021-06-04
XUZHOU XUGONG FOUND CONSTR MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the lowering process of the main winch, the balance valve is opened, and the pressure oil on the load side of the main winch motor passes through the balance valve to form a certain back pressure to balance the weight of the drill pipe, but the gravitational potential energy of the drill pipe is in vain by the balance valve throttle Lost, but also bring throttling heat, increasing the thermal load of the system

Method used

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  • Main winch system of rotary drilling rig

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Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Such as figure 1 As shown, a main winch system of a rotary drilling rig includes an engine 1, a transfer case 2, a closed main pump 3, an open main pump 4, an oil charge pump 5, a one-way valve 6, an overflow valve I7, and an explosion-proof valve 8. Main winch motor 9, two solenoid valves 10, pressure sensor 11, flushing valve 12, overflow valve II13. The engine 1 is connected to the input end of the transfer case 2, and the output end of the transfer case 2 is respectively connected to the closed main pump 3 and the open main pump 4, and the open main pump 4 is used for other hydraulic systems. When the main hoist is performing a lifting action, the closed main pump 3 outputs power to the main hoist motor 9 . When the main winch is lowering, the pressure oil on the load side of the main winch motor reacts on the closed main...

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Abstract

The invention discloses a main winch system of a rotary drilling rig. The main winch system adopts a closed loop to absorb gravitational potential energy of a drill rod when a main winch is lowered, so that the load rate of an engine is reduced, and fuel consumption is saved for the engine. The system comprises the engine, a transfer case, a closed main pump, an open main pump, an oil supplementing pump, a one-way valve, an overflow valve, an anti-explosion valve, a main winch motor, two electromagnetic valves, a pressure sensor, a flushing valve and two overflow valves; the engine is connected with the input end of the transfer case, and the output end of the transfer case is correspondingly connected with the closed main pump and the open main pump; a port A of the closed main pump is connected with a port A of the main winch motor, a port B of the closed main pump is connected with a port 1 of the anti-explosion valve, and a port 2 of the anti-explosion valve is connected with a port B of the main winch motor; and the oil supplementing pump is sequentially connected with the overflow valve, the one-way valve and an A / B port of the closed main pump.

Description

technical field [0001] The invention relates to the technical field of rotary drilling rigs, in particular to a main winch system of a rotary drilling rig. Background technique [0002] The rotary drilling rig is a pile machine used for hole-forming operations. After the drill bit is filled with soil, the drill pipe and the drill bit need to be lifted out of the hole by the main winch. The rod and bit are lowered into the hole again. The weight of the drill pipe generally weighs several tons or more than a dozen tons. If it is lifted and lowered in the hole in this way, the energy consumed by the lifting and the energy released by the lowering are very large. At present, the main winch system of rotary drilling rigs adopts an open system, that is, the hydraulic pump is used to supply oil to the multi-way valve, and the multi-way valve supplies the pressure oil to the main winch motor, and the return oil of the main winch motor flows back through the multi-way valve. tank. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/08F15B11/08F15B13/02F15B19/00F15B20/00E21B3/02
CPCB66D1/08E21B3/02F15B11/08F15B13/02F15B19/005F15B20/00
Inventor 张忠海张永华孙余刘志刚单昌猛马旭马滔郜星单俊云张宗阳
Owner XUZHOU XUGONG FOUND CONSTR MACHINERY
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